Hungaet



(No Model.) sheetssheet 1.

H. HENNEBBRG 8v O. LORENZ. RBGULATQR FOB, ELECTRIC ARG LAMPS.

No. 353,305. Patented Nov. 30, 1886.

UNITED STATES PATENT Grinch.

HUGO HENNEBER'G AND RICHARD O. LORENZ, OF VIENNA, AUS'il'tlA- i HUNGARY.

REGULATOR FOR ELECTRIC-ARC LAMP.

:':PECIFICATION forming part of Letters Patent No. 353,305, dated November Sail, i886.

Application filed December-29, i895. Serial No; 186,952. (No model.) Patented in Germany August (i, i984, No. 31,935; in Austriallungary Octohcr, 1884, No. 28,9U72 and No, 45,6618, and in England July 9.8, 1885, No. 9,061A

To all 1071/0712/ it may concern:

Be it known that we, HUeo HENNEBERG and RICHARD 0. LORENZ, subjects ot' the Eniperor of Austria-Hungary, and residing at Vienna, Austria-l-Iungary, have invented a new and usci'ul Improvement in Regulators for Electric-Arc Lamps, (for which `we have obtained patents in Germany, August (5, 1881i, No. 81.235; in Austria-Hungary, October o, 18S-fi, No. 28,902 and No. 45,668; in England, July 2S, 1385, No. 9,06i,) of which the following is a specification.

rlhe present invention relates to improvements in regulators for clectricarc lamps.

The characteristic Afeature oit' the present iuvent-ion is the use of the magnetic action upon rotating iron bodies or other parainagnetic bodies at a distance for the regulation of the are in electricarc lamps. rlhis kind of regulator oi'iers thc peculiar advantage that the carbons are fed continually in the ratio el' their consumption,so that the length ofthe arc, the resistance of the same, and the strength ot' the current are maintained practically constant.

This regulator consequently differs from all others hitherto used, which regulate with the alteration ol" current, inasmuch as it feeds the cai-bons under constant electric current. For

vthis purpose the weight of a rack serving as i the inaincnrrent electro-magnet B, as well as the shunt-circuit electro-magnet G. rlhe rack l) is connected with the disk E and fan YV by means of a train of tooth-wheels, as indicated in the drawings, or by any other suitable gear- :ing capable of securing a great speed oi' rotation.

L is the other carbon-holder,which is capa` ble of movement in a vertical direction and of being drawn down by an armature, M,

H is a locking 'lcvice,which has for its object to prevent the rack Dl'rom dropping when the lamp is not in action. This is eileeted by a pawl, G, which is connected with an armature, l, attached to the double armed lever lfLtand meshes with a ratchetwheel, g, keyed` upon the axis of the iron disk E.

The lamp works in the following manner: Vv'hen the carbons are out of contact the entire current passes through the shuntcircuit inagnet C, in consequence of which this latter attracts the armature K, which moves the angular lever lLwhich at G releases or disengages the ratchet-wl'ieel g. rlhe disk E new coniniences to rotate, and the rack D is sinking until the carbons come in contact. New the main circuit is closed and the electro-magnet B attracts the armature M, so that the are is formed. u the other hand, thevpole-shoe A is inagnctizcd,whereby the motion of the disk, and hence of the rack connected with one oi' the carhons, (in the present case the upper one,) is completely stopped. By the gradual consumption of the carbons the resistance of the arc is gradually and constantly increasing, in consequence oi' which the force of the shuntcircuit electro-magnet C is also constantly in creasing 5 but since the magnetism which C generates in A is opposed to that generated by B the pole-shoe is decreasing in magnetic force in ratio to the increase oi' the are, and the disk commences to rotate,tirst slowly, but with increasing speed, because the decrease of the magnetism in A lasts as long as the arc is increasing in length. Nevertheless, no further decrease or magnetism can take place in A as long as the speed of the disk is exactly proportional (and therelbre the lced of the carbons exactly equal) to the speed at which the carbons are consumed, and henceforth the length of the arc,and consequently its resistaucennust remain constant.

The disk, as well as the poleshoe, is of soft iron. It is a matter of course, however, that other paramaguetic bodies may be used to advantage, and that in place oit' the disk shape a ring, ball, cylinder, or any other shape may be employed for the body rotating in the pole-y shoe. v

Instead of employing a pole-shoe with elecF roo tro-magnets mounted at both sides of it, the eqnallynained poles at both sides of the iron disk may be produced by inclosing the disk itself with two bobbinsso as to resemble the core of a solenoid, inside of which the disk is free to rotate, and which bobbins contain two coils-namely, one, B, of thick wire, through which the main current passes, while the other, C,of thinner wire, forms a shunt-circuit to the arc. These two coils must be formed in such a manner, that if, for instance, the coil traversed by the main current produces in the iron disk at P a north pole and at Q a south polethe shunt-coil will produce the opposite poles'nq that is to say, at P a south pole and at Q a north pole. The effect of these two coils upon the iron disk, and the regulation of the consumption of the carbons thereby produced, is the same as with the use of magnets and one pole-shoe, since the main eurrent,by producing magnetic poles in the disk at P and Q, reduces its speed oi' motion,whilethe shunt-cnn rent by weakening these poles counteracts this decrease.

The arrangement of the rack and of the train of gearing is illustrated in Figs. 4, 5, and 6 of the annexed drawings. It is similar to that iirst described with reference to Figs. 1,2, and 3, except that in order to produce the arc it is necessary to employ an electro-magnet, F, (situated or included in the main circuit,)and an armature. M.

Vhat we claim isl. In electric-arc lamps, the combination of a thick wire coil placed in circuit with the car bons with a thin wire coil placed in a shuntcircuit and wound in opposite'direction to the main coil, a disk of parainagnetie material adapted to turn on its axis and placed so that the two wire coils have an opposite inductive action on the said disk, and mechanism for converting the rotary motion of the disk into an advancing or receding motion of one of the carbons, andvice versa, for the purpose of regulating the distance between the carbous, substantially as described.

2. In electric-arc lamps, the combination of a thick wire coil placed in a circuit with the carbons with a thin wire coil placed in a shuntcircuit and wound in opposite direction to the main coil, a pole-shoe or core common to both coils and adapted tobemagnetized by thesame in opposite direction, a disk of parainagnetic material adapted to turn in a slot of the said pole-shoe without contact with the latter.and mechanism 'for converting the motion of the disk into a feed-motion oi' one ofthe carbons, and vice versa, substantially as and for the purpose described.

3. A regulator for electric-arc lamps, comprising in its construction a rack, D, serving as one of the carbon-holders, an iron disk, E, adapted to turn on its axis, mechanism intermediate the disk E and the rack D, a slotted pole-shoe, A, provided with main coil B and shunt-coil G, and adaptedto ae't on the disk E by induction, and a stopping device,G f/ H K, substantially as and for the purpose described.

In testimony whereof we have signed this specification in the presence ot' two subscribing witnesses.

HUG() HEJNEBERG. RICHARD O. LORENZ. Witnesses:

EDMUND J UssnN, Or'ro SCHIPPER. 

